lxc_monitor_protocol: Redefine xdr_uint64_t if needed
lxc_monitor_protocol: Redefine xdr_uint64_t if needed

https://bugzilla.redhat.com/show_bug.cgi?id=993411

On some systems (using libtirpc instead of glibc's
implementation), xdr_uint64_t exists rather under different name:
xdr_u_int64_t. This makes compilation fail then:

libvirt_lxc-lxc_monitor_protocol.o: In function `xdr_virLXCMonitorInitEventMsg':
/usr/local/src/libvirt/libvirt-1.1.1/src/./lxc/lxc_monitor_protocol.c:31: undefined reference to `xdr_uint64_t'

Therefore we rather mirror the d707c866 commit and redefine
xdr_uint64_t if needed.

Signed-off-by: Michal Privoznik <83d82aaba2eed257f4814b0c239c260c4caaadf0@redhat.com>

eskultety/libvirt,agx/libvirt,olafhering/libvirt,libvirt/libvirt,VenkatDatta/libvirt,VenkatDatta/libvirt,agx/libvirt,jardasgit/libvirt,andreabolognani/libvirt,datto/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,jfehlig/libvirt,nertpinx/libvirt,olafhering/libvirt,taget/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,datto/libvirt,agx/libvirt,agx/libvirt,taget/libvirt,crobinso/libvirt,eskultety/libvirt,nertpinx/libvirt,jardasgit/libvirt,jfehlig/libvirt,andreabolognani/libvirt,nertpinx/libvirt,rlaager/libvirt,libvirt/libvirt,crobinso/libvirt,elmarco/libvirt,datto/libvirt,olafhering/libvirt,taget/libvirt,fabianfreyer/libvirt,elmarco/libvirt,elmarco/libvirt,libvirt/libvirt,jardasgit/libvirt,rlaager/libvirt,datto/libvirt,zippy2/libvirt,crobinso/libvirt,eskultety/libvirt,rlaager/libvirt,taget/libvirt,eskultety/libvirt,rlaager/libvirt,fabianfreyer/libvirt,andreabolognani/libvirt,shugaoye/libvirt,elmarco/libvirt,VenkatDatta/libvirt,zippy2/libvirt,fabianfreyer/libvirt,zippy2/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,VenkatDatta/libvirt,andreabolognani/libvirt,shugaoye/libvirt,olafhering/libvirt,agx/libvirt,zippy2/libvirt,jardasgit/libvirt,taget/libvirt,libvirt/libvirt,eskultety/libvirt,shugaoye/libvirt,datto/libvirt,shugaoye/libvirt,crobinso/libvirt,rlaager/libvirt,nertpinx/libvirt,jfehlig/libvirt,andreabolognani/libvirt,elmarco/libvirt,shugaoye/libvirt